#include "date.h"
void test()
{
  date d;
  date b=d;
  cout <<(d<b)<<endl;
  cout<<(d>=b)<<endl;
  cout<<(d>b)<<endl;
  cout<<(d<=b)<<endl;
  b=d+10;
  d+=50;
  d=b-10;
  b-=20;
  ++b;
  date a=d++;
  --d;
  a=b--;
}
int main()
{
  test();
  return 0;
}
